Edit the file /etc/netdiff/netdiff.conf and provide the following information.
Set the db_name, db_user, and db_pass lines to the appropriate database name, database user and password that you set up when you created the MySQL database.
Set the report_to line to an email address you would like the NetDiff reports sent to.
Add a networks line specifying the network or networks you would like to scan, in 192.168.1.0/24 format.
Again, if you are using the WebTool module for NetDiff, these options can be configured within the module. See Section 4.2 for details on how to use the NetDiff WebTool module.